relay ACURA NSX 1997 Service Manual PDF

Dash Lights Brightness Control

Control Unit Input Test

1. Disconnect the 7P connector from the control unit.

2. Inspect the connector and socket terminals to be sure

they are all making good contact.

If the terminals are bent, loose or corroded, repair

them as necessary, and recheck the system.

If the terminals look OK, make the following input

tests at the connector.

— If any test indicates a problem, find and correct

the cause, then recheck the system.

— If all the input tests prove OK, the control unit

must be faulty; replace it.

BLK

DASH LIGHTS

BRIGHTNESS

CONTROL UNIT

7P CONNECTOR
View from wire side

RED/BLK

Terminal
Test condition
RED/WHT

Test: Desired result
RED

Possible cause if result is not obtained

BLK

RED/BLK

RED

RED/GRN

and

RED/WHT
Under all conditions

Headlight switch ON

Headlight switch ON

Adjusting dial rotating
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Attach to ground: The dash lights

should come on full bright.

Check for resistance between the

RED/GRN and RED/WHT terminals:

It should vary from 0 to 20,000

ohms as the dial is rotated.
• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 38 (15 A) fuse

• Faulty taillight relay

• Faulty headlight switch

• An open in the wire

• An open in the RED/BLK or RED

wire

• Faulty dash lights brightness con-

troller

• An open in the wire
RED/GRNProCarManuals.com

1. Remov e th e glov e bo x (se e sectio n 20 ).
2 . Disconnec t th e 4 P connecto r fro m th e cigarett e
lighte r rela y (wir e color s of 4P connector : BLU /
GRN, YEL/RED , BRN/YEL , BLK) .
3. Chec k continuit y a t th e rela y terminals .
Ther e shoul d b e continuit y betwee n th e C an d D
terminals .
There shoul d b e continuit y betwee n th e A an d B
terminal s whe n powe r an d groun d ar e connecte d
t o th e C an d D terminals .
Ther e shoul d b e n o continuit y betwee n th e A
an d B terminal s whe n powe r i s disconnected .
Cigarette Lighte r
Relay Tes t
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Stereo Soun d Syste m
Componen t Locatio n Inde x
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S ( sectio n 24 ) befor e performin g repair s o r ser -
vice .
UNDER-HOO DRELAY BO X A
STERE O RADIO/CASSETT E PLAYE R
• Removal , pag e 23-24 0
• Terminals , pag e 23-24 2
FOO T WEL L BAS S SPEAKE R
Replacement , pag e 23-247
POWE R AMPLIFIE R RELA Y
Wir e colors : YEL/RED ,
GRN/BLK , PNK/WHT , BL K
Test , pag e 23-24 2 PASSENGER'
S DOO R SPEAKE R
Replacement , pag e 23-24 7
DRIVER'SDOO RSPEAKERReplacement , pag e 23-24 7
REAR SPEAKE RReplacement , pag e 23-24 7
POWE R ANTENN A MOTO R
• Test , pag e 23-24 3
• Replacement , pag e 23-24 4
WINDO W ANTENN A
MAST ANTENN A LEA D WINDO
W ANTENN A
LEAD
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Stereo Sound System

Unit Terminals

For MAST

ANTENNA
DIN CONNECTOR

(for CD CHANGER)

For WINDOW

ANTENNA

Terminal Wire

Connects to

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

A15

A16
WHT

WHT

RED/BLK

WHT/YEL

YEL/RED

PNK/WHT

WHT

WHT

ORN

ORN

ORN/WHT

BLK/BRN

BLK/LT GRN

BLK

ORN

ORN
Passenger's door speaker amplifier

Driver's door speaker amplifier

Lights-on signal

Constant power (Tuning memory)

ACC (I) (Main stereo power supply)

Radio switched power (To antenna and

relay)

Foot well bass speaker (Driver's )

Foot well bass speaker (Passenger's )

Passenger's door speaker amplifier

Driver's door speaker amplifier

Cellular phone mute signal

Security (IN)

Security ground (G404)

Ground (G401, G402, G403)

Foot well bass speaker (Driver's )

Foot well bass speaker (Passenger's )
Power Amplifier Relay Test

1. Remove the power amplifier relay from under-hood

relay box B.

2. Check continuity at the relay terminals.

There should be continuity between the C and D

terminals.

There should be continuity between the A and B

terminals when power and ground are connect-

ed to the C and D terminals.

There should be no continuity between the A and

B terminals when power is disconnected.ProCarManuals.com

Horns
Componen t Locatio n Inde x
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S sectio n 24 befor e performin g repair s o r ser -
vice .
UNDER-HOO D RELA YBOX A
HOR N SWITC HTest, pag e 23-25 1
Overhaul , sectio n 1 7
CABL
E REE L
Test , pag e 23-25 2
SECURITY HOR N
Test , pag e 23-25 0
UNDER-HOO DFUSE/RELAY BO X SECURIT
Y CONTRO LUNITInpu t Test , pag e 23-32 2
RIGHT HOR NTest, pag e 23-25 0 LEF
T HOR N
Test , pag e 23-25 0
Descriptio n
Security Alar m System :
Th e securit y alar m syste m is a n anti-thef t alar m system . I f someon e trie s t o ope n th e trunk , hoo d o r eithe r doo r withou t
th e ignitio n key , o r i f th e roo f i s no t full y latched , th e securit y contro l uni t sense s a signa l fro m th e sensor s an d activate s
relay s t o flas h th e headlight s an d soun d th e hor n fo r abou t tw o minutes .
HORN RELA Y
Wir e colors : ORN/BLK ,
WHT/GRN, L T GRN/WHT ,, WHT/GR N
Test, pag e 23-25 1
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Relay Test

1. Open the hood, and remove the horn relay from

under-hood relay box A.

2. Check continuity at the relay terminals.

There should be continuity between the C and D

terminals.

There should be continuity between the A and B

terminals when power and ground are connected

to the C and D terminals.

There should be no continuity between the A

and B terminals when power is disconnected.ProCarManuals.com

Power Window s
Componen t Locatio n Inde x
POWE R WINDO WRELAYTest, pag e 23-27 9
PASSENGER' S DOO R SWITC H DRIVER'
S DOO R SWITC H
Test , pag e 23-20 6
UNDER-HOO D FUSE/RELA YBOX
Test , pag e 23-20 6
PASSENGER' S MOTO R
Test , pag e 23-27 8
Replacement , sectio n 2 0
PASSENGER' S SWITC H
Test , pag e 23-27 6
Replacement , pag e 23-27 7
DRIVER'S MOTO R
Test , pag e 23-27 8
Replacement ,section 2 0
MASTE R SWITC H
Test , pag e 23-27 5
Replacement , pag e 23-27 6
POWE R WINDO W
CONTRO L UNI T
Inpu t test , pag e 23-27 4
UNDER-DAS H FUS E BO X KEY-OF
F TIME R CIRCUI T
(I n th e integrate d contro l unit )
Inpu t test , pag e 23-17 0
Descriptio n
Power Windo w Key-of f Time r Operation :
The powe r window s ca n stil l b e operate d fo r abou t te n minute s afte r th e ignitio n switc h is turne d fro m th e O N (II ) t o th e
AC C (I ) o r LOC K (O ) positio n a s lon g a s neithe r o f th e door s ha s bee n opened . Thi s provide s a convenienc e t o parke d
occupant s whil e offerin g a degre e o f securit y agains t unwante d o r accidenta l windo w operation .
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Power Windows

Control Unit Input Test

NOTE: The control unit only controls the driver's door

window.

Remove the driver's door panel and disconnect the 4P

and 6P connectors from the control unit.

Inspect the connector and socket terminals to be sure

they are all making good contact.

If the terminals are bent, loose, or corroded, repair

them as necessary, and recheck the system.

If the terminals look OK, make the following input

tests at the connector.

— If any test indicates a problem, find and correct the

cause, then recheck the system.

— If all the input tests prove OK, the control unit

must be faulty; replace it.
POWER WINDOW

MASTER SWITCH
POWER WINDOW

CONTROL UNIT

Wire
Test condition

Test: Desired result
Possible cause if result is not obtained

BLK1
Under all conditions
Check for continuity to ground:

There should be continuity.
• Poor ground (G401, G402, G403)

• An open in the wire

Ignition switch ON (II)

Check for voltage to ground:

There should be battery voltage.

WHT/YEL
• Blown No. 50 (20 A) fuse

• Faulty power window relay

• Faulty key-off timer system

• Poor ground (G201)

• An open in the wire

BLK/YEL
Ignition switch ON (II)

and driver's switch UP

BLK/GRN
Ignition switch ON (II) and

driver's switch DOWN
Check for voltage to ground:

There should be battery voltage as

the switch is pushed.
• Faulty driver's switch

• An open in the wire

RED/GRN
Ignition switch ON (

and driver's switch

DOWN (AUTO)

BLU and

BLK2
Connect the WHT/YEL

terminal to the RED/BLU

terminal, and the BLK1

terminal to the RED/YEL

terminal.
Check for voltage between the BLU (+)

and BLK2 (-) terminals with an analog

voltmeter: It should indicate between

3-8 volts as the motor runs.
• Faulty pulser

• Faulty driver's motor

• An open in the wireProCarManuals.com

Relay Test

1. Remove the power window relay in the under-hood

fuse/relay box.

2. Check continuity at the relay terminals.

There should be continuity between the C and D

terminals.

There should be continuity between the A and B

terminals when power and ground are connect-

ed to the C and D terminals.

There should be no continuity between the A and

B terminals when power is disconnected.ProCarManuals.com

Rear Windo w Defogge r
Relay Tes t
1. Remov e th e defogge r rela y i n th e engin e compart -
men t fuse/rela y box .
2 . Chec k continuit y a t th e rela y terminals .
• Ther e shoul d b e continuit y betwee n th e C an d D
terminals .
• Ther e shoul d b e continuit y betwee n th e A an d B
terminal s whe n powe r an d groun d ar e connecte d
t o th e C an d D terminals .
• Ther e shoul d b e n o continuit y betwee n th e A
an d B terminal s whe n powe r i s disconnected .
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